<template>
    <div>
        <!-- 面包屑导航区域 -->
        <el-breadcrumb separator="/">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card class="box-card">
            <el-row :gutter="10">
                <el-col :span="8">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" @clear="getUserList()" clearable>
                        <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>

            <!-- 用户列表区域 -->
            <el-table :data="userList" border stripe>
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch @change="userStateChanged(scope.row)" v-model="scope.row.mg_state"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template v-slot="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip class="item" effect="dark" content="分配角色" placement="bottom-end" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区域 -->
            <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户对话框 -->
        <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
            <!-- 内容主要区域 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <!-- 底部区域 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 修改用户的对话框 -->
        <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
            <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile"></el-input>
                </el-form-item>
            </el-form>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>

        <!-- 分配角色的对话框 -->
        <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
            <div>
                <p>当前的角色: {{userInfo.username}}</p>
                <p>当前的角色: {{userInfo.role_name}}</p>
                <p>分配新角色:
                    <el-select v-model="seletedRoleId" placeholder="请选择">
                        <el-option v-for="item in roleList" :key="item.id" :label="item.roleName" :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data () {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) {
                //合法邮箱
                return cb()
            }
            cb(new Error('请输入合法邮箱'))
        }

        //验证手机号的规则

        var checkMobile = (rule, value, cb) => {
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            if (regMobile.test(value)) {
                //合法手机号
                return cb()
            }
            cb(new Error('请输入合法手机号'))

        }
        return {
            //获取用户列表的参数对象
            queryInfo: {
                query: '',
                //当前的页数
                pagenum: 1,
                //当前每页显示多少条数据
                pagesize: 5
            },
            userList: [],
            total: 0,
            //控制 添加用户 对话框的显示/隐藏
            addDialogVisible: false,
            //添加用户的表单数据
            addForm: {
                username: '',
                password: '',
                email: '',
                mobile: ''
            },
            //添加表单的验证规则对象
            addFormRules: {
                username: [{ required: true, message: '请输入用户名', trigger: 'blur' }, { min: 3, max: 10, message: '用户名的长度在3~10个字符之间', trigger: "blur" }],
                password: [{ required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 15, message: '用户名的长度在6~15个字符之间', trigger: "blur" }],
                email: [{ required: true, message: '请输入邮箱', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
                mobile: [{ required: true, message: '请输入手机', trigger: 'blur' }, { validator: checkMobile, trigger: 'blur' }]
            },
            //控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            //查询到的用户信息对象
            editForm: {

            },
            //分配角色对话框的显示/隐藏
            setRoleDialogVisible: false,
            //需要被分配角色的用户信息
            userInfo: {},
            // 所有角色的数据列表
            roleList: [],
            // 选中的分配id值
            seletedRoleId: ''
        }
    },
    created () {
        this.getUserList()
    },
    methods: {
        async getUserList () {
            const { data: res } = await this.$http.get('users', {
                params: this.queryInfo
            })
            if (res.meta.status !== 200) {
                return this.$message.error('获取用户列表失败')
            }
            this.userList = res.data.users
            this.total = res.data.total
        },
        //监听 pagesize 改变的事件
        handleSizeChange (newSize) {
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        //监听 页码值 改变的事件
        handleCurrentChange (newPage) {
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听 switch 开关状态的改变
        async userStateChanged (userInfo) {
            const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
            if (res.meta.status !== 200) {
                userInfo.mg_state = !userInfo.mg_state
                return this.$message.error('更新用户状态失败!')
            }
            this.$message.success('更新用户状态成功!')
        },
        //监听添加用户对话框的关闭事件
        addDialogClosed () {
            this.$refs.addFormRef.resetFields()
        },
        //点击按钮添加新用户
        addUser () {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                const { data: res } = await this.$http.post('users', this.addForm)
                if (res.meta.status !== 201) {
                    this.$message.error('添加用户失败!')
                }
                this.$message.success('添加用户成功!')
                //隐藏添加用户对话框
                this.addDialogVisible = false
                //刷新用户列表
                this.getUserList()
            })
        },
        //展示编辑用户的对话框
        async showEditDialog (id) {
            const { data: res } = await this.$http.get('users/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败!')
            }
            this.editForm = res.data
            this.editDialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed () {
            this.$refs.editFormRef.resetFields()
        },
        //修改用户信息提交
        editUserInfo () {
            //预校验
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                //发起修改用户信息的请求
                const { data: res } = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
                if (res.meta.status !== 200) {
                    return this.$message.error('数据更新失败!')
                }
                //关闭对话框
                this.editDialogVisible = false
                //刷新数据列表
                this.getUserList()
                //提示修改成功
                this.$message.success('用户信息更新成功!')
            })
        },
        //根据id值删除对应用户
        async removeUserById (id) {
            //弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 如果用户确认删除，则返回值为字符串confirm
            // 如果用户取消了删除，则返回值为字符串 cancel
            if (confirmResult !== 'confirm') return
            const { data: res } = await this.$http.delete('users/' + id)
            if (res.meta.status !== 200) {
                return this.$message.error('删除用户失败!')
            }
            this.$message.success('删除用户成功!')
            this.getUserList()
        },
        //展示分配角色对话框
        async setRole (userInfo) {
            this.userInfo = userInfo
            //在展示对话框之前，获取角色列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败!')
            }
            this.roleList = res.data

            this.setRoleDialogVisible = true
        },
        //点击按钮，分配角色
        async saveRoleInfo () {
            if (!this.seletedRoleId) {
                return this.$message.error('请选择要分配的角色!')
            }
            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid: this.seletedRoleId
            })
            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败!')
            }
            this.$message.success('更新角色成功!')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭事件
        setRoleDialogClosed () {
            this.userInfo = {}
            this.seletedRoleId = ''
        }
    }

}
</script>

<style lang="less" scoped></style>
